The reasons why patients always feel dizzy are as follows: 1, it may be related to the patient’s plant nerve dysfunction, when the patient has long time mental tension, lack of sleep, staying up late will lead to a decline in brain function activity, work efficiency, the patient will appear dizzy, dizzy feeling. 2, the patient always feels dizzy should consider systemic diseases, the most common is the brain atherosclerosis leading to insufficient blood supply to the brain The most common is the lack of blood supply to the brain due to atherosclerosis of the brain, or the lack of brain energy due to hypoglycemia and hypotension, as well as the anxiety and emotional stress of the patient, which should be clarified by combining with the relevant examination of the patient.